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A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q. Is the electric field inside a cavity (with no charge) zero, even if the shell is not spherical, buthas any irregular shape ? Explain. |
| Answer» Solution :Electric FIELD inside a cavity (with no CHARGE) is ALWAYS zero whether the shell isspherical or of any other shape. It is in accordance with Gauss.s THEOREM in ELECTROSTATICS. As charge enclosed by the cavity is zero, hence total electric fluxand consequently, the electric field intensity inside a cavity must be zero. | |